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CHDIR(2) BSD System Calls Manual CHDIR(2)
NAMEchdir, fchdir -- change current working directory
SYNOPSIS#include<unistd.h>intchdir(constchar*path);
intfchdir(intfildes);
DESCRIPTION
The path argument points to the pathname of a directory. The chdir()
function causes the named directory to become the current working direc-tory, directory,
tory, that is, the starting point for path searches of pathnames not
beginning with a slash, `/'.
The fchdir() function causes the directory referenced by fildes to become
the current working directory, the starting point for path searches of
pathnames not beginning with a slash, `/'.
In order for a directory to become the current directory, a process must
have execute (search) access to the directory.
RETURNVALUES
Upon successful completion, a value of 0 is returned. Otherwise, a value
of -1 is returned and errno is set to indicate the error.
ERRORS
The Chdir() system call will fail and the current working directory will
be unchanged if one or more of the following are true:
[EACCES] Search permission is denied for any component of the
path name.
[EFAULT] Path points outside the process's allocated address
space.
[EIO] An I/O error occurred while reading from or writing to
the file system.
[ELOOP] Too many symbolic links were encountered in translat-ing translating
ing the pathname. This is taken to be indicative of a
looping symbolic link.
[ENAMETOOLONG] A component of a pathname exceeded {NAME_MAX} charac-ters, characters,
ters, or an entire path name exceeded {PATH_MAX} char-acters. characters.
acters.
[ENOENT] The named directory does not exist.
[ENOTDIR] A component of the path prefix is not a directory.
Fchdir() will fail and the current working directory will be unchanged if
one or more of the following are true:
[EACCES] Search permission is denied for the directory refer-enced referenced
enced by the file descriptor.
[EBADF] The argument fildes is not a valid file descriptor.
[EINTR] Fchdir(was, interrupted, by, a, signal.)
[EIO] An I/O error occurred while reading from or writing to
the file system.
[ENOTDIR] The file descriptor does not reference a directory.
SEEALSOchroot(2)STANDARDS
The chdir() is expected to conform to IEEE Std 1003.1-1988 (``POSIX.1'').
HISTORY
The fchdir() function call appeared in 4.2BSD.
4th Berkeley Distribution December 11, 1993 4th Berkeley Distribution